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		<h1>shell 练习-判断是否开启web服务</h1>
	
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		<span class="article__date">2017-10-12</span><br />
		
		
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			  	<a class="article__tag-link" href="/tags/shell练习/">shell练习</a>
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		<p>写一个脚本判断你的Linux服务器里是否开启web服务？（监听80端口）如果开启了，请判断出跑的是什么服务，是httpd呢还是nginx又或者是其他的什么？</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div></pre></td><td class="code"><pre><div class="line"><span class="meta">#!/bin/bash</span></div><div class="line">port=`netstat -lnp | grep 80`</div><div class="line"><span class="keyword">if</span> [ -z <span class="string">"port"</span> ]; <span class="keyword">then</span></div><div class="line">    <span class="built_in">echo</span> <span class="string">"not start service."</span>;</div><div class="line">    <span class="built_in">exit</span>;</div><div class="line"><span class="keyword">fi</span></div><div class="line">web_server=`<span class="built_in">echo</span> <span class="variable">$port</span> | awk -F<span class="string">'/'</span> <span class="string">'&#123;print $2&#125;'</span>|awk -F : <span class="string">'&#123;print $1&#125;'</span>`</div><div class="line"><span class="keyword">case</span> <span class="variable">$web_server</span> <span class="keyword">in</span></div><div class="line">    httpd )     </div><div class="line">        <span class="built_in">echo</span> <span class="string">"apache server."</span> </div><div class="line">    ;;     </div><div class="line">    nginx )     </div><div class="line">         <span class="built_in">echo</span> <span class="string">"nginx server."</span> </div><div class="line">    ;;   </div><div class="line">    * ) </div><div class="line">         <span class="built_in">echo</span> <span class="string">"other server."</span>   </div><div class="line">    ;;   </div><div class="line"><span class="keyword">esac</span></div></pre></td></tr></table></figure>

	

	
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